CPU Power Management

Functions
int	pm_cpu_off (void)
	Power down the calling core.
int	pm_cpu_on (unsigned long cpuid, uintptr_t entry_point)
	Power up a core.
int	pm_system_reset (unsigned char reset)
	System reset.

Detailed Description

Function Documentation

pm_cpu_off()

int pm_cpu_off

(

void

)

#include <zephyr/drivers/pm_cpu_ops.h>

Power down the calling core.

This call is intended for use in hotplug. A core that is powered down by cpu_off can only be powered up again in response to a cpu_on

Return values

The	call does not return when successful
-ENOTSUP	If the operation is not supported

pm_cpu_on()

int pm_cpu_on	(	unsigned long	cpuid,
		uintptr_t	entry_point )

#include <zephyr/drivers/pm_cpu_ops.h>

Power up a core.

This call is used to power up cores that either have not yet been booted into the calling supervisory software or have been previously powered down with a cpu_off call

Parameters

cpuid	CPU id to power on
entry_point	Address at which the core must commence execution

Return values

0	on success, a negative errno otherwise
-ENOTSUP	If the operation is not supported

pm_system_reset()

int pm_system_reset

(

unsigned char

reset

)

#include <zephyr/drivers/pm_cpu_ops.h>

System reset.

This function provides a method for performing a system cold or warm reset.

Parameters

reset

system reset type, cold or warm.

Return values

0	on success, a negative errno otherwise